Combining and partitioning numbers within 10
I can use my knowledge of combining and partitioning numbers within 10 when solving problems.
Combining and partitioning numbers within 10
I can use my knowledge of combining and partitioning numbers within 10 when solving problems.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- We can combine two parts to make a whole. Part + part = whole
- We can partition a whole into two parts.
- We can partition a part from a whole. Whole − part = part
Keywords
Combine - To join or merge two or more parts together.
Partition - The act of splitting an object or value into smaller parts.
Whole - All of a group or number.
Part - A piece or section of the whole.
Common misconception
Children might record that numbers can only be partitioned in one way.
Children here have the chance to explore how numbers can be partitioned in many different ways. Narrate when exploring these different ways throughout, using ___ is the whole, ___ is a part and ___ is a part.
To help you plan your year 1 maths lesson on: Combining and partitioning numbers within 10, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 1 maths lesson on: Combining and partitioning numbers within 10, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 1 maths lessons from the Solving problems in a range of contexts unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
40
49
50
39
4 + 2 =
40 + 20 =
7 + 3 =
70 + 30 =
16
10
15
14
6
5
9
7
8
8
4
10
6
Exit quiz
6 Questions
the number of triangles
the number of squares
part
whole
part
6 rectangles
4 rectangles
7 rectangles
5 rectangles